[특허]Reclaim function for semiconductor processing system

Reclaim function for semiconductor processing system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01F-015/02
출원번호	US-0563275 (2012-07-31)
등록번호	US-8591095 (2013-11-26)
발명자 / 주소	Fanjat, Norbert Urquart, Karl J. Soulet, Axel Langellier, Laurent
출원인 / 주소	Air Liquide Electronics U.S. LP
대리인 / 주소	McQueeney, Patricia E.
인용정보	피인용 횟수 : 0 인용 특허 : 62

초록 ▼

Systems for controlling fluids in semiconductor processing systems are disclosed. The disclosed systems comprise a chemical blender, a reclaim tank, a dispense system, two chemical monitors, a controller, and a reclamation line in fluid communication with an outlet of the process station and coupled to the reclaim tank. The reclaim tank mixes solution from the chemical blender and the reclamation line. One of the two chemical monitors the mixed solution downstream from the dispense system. The controller is configured to flow the mixed solution to the process station upon determination by the first chemical monitor that at least one chemical compound in the mixed solution is at a predetermined concentration. The second chemical monitor monitors the reclaimed portion of the mixed solution to determine whether the at least one chemical compound is at a predetermined concentration before being reintroduced into the reclaim tank.

대표청구항 ▼

1. A system, comprising: a chemical blender for mixing chemical compounds to produce a solution;a reclaim tank for mixing the solution from the chemical blender and a reclaimed solution from a process station;a dispense system for dispensing a mixed solution to the process station;a first chemical monitor configured to monitor the mixed solution downstream from the dispense system and to determine whether at least one of the chemical compounds is at a predetermined concentration;a controller configured to flow the mixed solution to the process station upon determining that the at least one chemical compound in the mixed solution is at the predetermined concentration as determined by the first chemical monitor;a reclamation line in fluid communication with an outlet of the process station and coupled to the reclaim tank, whereby at least a portion of mixed solution removed from the process chamber after use is reclaimed and returned to the reclaim tank; anda second chemical monitor configured to monitor the reclaimed portion of the mixed solution to determine whether the at least one of the chemical compound in the reclaimed portion is at a predetermined concentration before being reintroduced to the reclaim tank. 2. The system of claim 1, wherein the first and second monitors are the same. 3. The system of claim 1, wherein the first and second monitors are configured to measure a characteristic of the mixed solution, wherein the characteristic is selected from the group consisting of conductivity, refractive index, oxydo-reduction potential, infra-red, ultraviolet, pH and combinations thereof. 4. The system of claim 1, wherein the dispense system includes two holding tanks configured to alternately fill with the mixed solution and dispense the mixed solution to the process station. 5. The system of claim 1, wherein the chemical blender comprises: (a) at least two inputs, each input for receiving a respective chemical compound;(b) at least one mixing station for mixing the chemical compounds to produce the solution; and(c) a first concentration monitor downstream from the at least one mixing station. 6. The system of claim 1, further comprising a recirculation line in fluid communication with the dispense system and the reclaim tank. 7. The system of claim 1, wherein the controller is configured to flow the reclaimed portion of the mixed solution to the reclaim tank upon determining that the at least one chemical compound in the reclaimed portion of mixed solution is at the predetermined concentration as determined by the second concentration monitor. 8. The system of claim 1, wherein the controller is configured to increase a concentration of the solution in the chemical blender until the at least one chemical compound in the mixed solution is at the predetermined concentration. 9. The system of claim 1, further comprising a second process station in fluid communication with the dispense system for receiving the mixed solution and in fluid communication with the reclamation line for returning at least a portion of mixed solution to the reclaim tank. 10. The system of claim 1, wherein the process station includes at least two chambers, and the mixed solution is dispensed to one of the at least two chambers. 11. The system of claim 10, further comprising a second reclaim tank for dispensing a second mixed solution to a different one of the at least two chambers.

이 특허에 인용된 특허 (62)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Reclaim function for semiconductor processing system 원문보기

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Reclaim function for semiconductor processing system 원문보기

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